instrumental analysis exam 1 questions with verified
answers
2 that gives quantitative information Ans✓✓✓ volumetric analysis
(titration): measurement of substances based on volumetric
measurement
Gravimetric analysis: determine compounds based on mass
3 components of MS Ans✓✓✓ 1. source of ions
2. mass separation/ analyzer
3. detector
4 qualitative information Ans✓✓✓ Extraction: using properties of
solvents to separate materials in solution
precipitation: solid formed in solution during chemical reaction.
distillation: separating components based on boiling points
chemical tests: prove existence or presence of specific chemical
additive interference Ans✓✓✓ direct effect (look at picture of graph)
, example: pH meters respond to Na+ in addition to H+ can lead to error
w/ high concentration of Na+
analyte Ans✓✓✓ species being studied
analytical chemistry Ans✓✓✓ study of separation, identification, &
quantification of chemical components in a materials
calibration curve Ans✓✓✓ plot of detector response against analyte
concentration
two variables : known & measured response correlated to known
chemical interference Ans✓✓✓ other components interfere w/ results
like:
- other solutes or matrix effects
- pH
chromatogram Ans✓✓✓ graph that shows detectors response as a
function of elution time
chromatography Ans✓✓✓ method od separating components in a
mixture
answers
2 that gives quantitative information Ans✓✓✓ volumetric analysis
(titration): measurement of substances based on volumetric
measurement
Gravimetric analysis: determine compounds based on mass
3 components of MS Ans✓✓✓ 1. source of ions
2. mass separation/ analyzer
3. detector
4 qualitative information Ans✓✓✓ Extraction: using properties of
solvents to separate materials in solution
precipitation: solid formed in solution during chemical reaction.
distillation: separating components based on boiling points
chemical tests: prove existence or presence of specific chemical
additive interference Ans✓✓✓ direct effect (look at picture of graph)
, example: pH meters respond to Na+ in addition to H+ can lead to error
w/ high concentration of Na+
analyte Ans✓✓✓ species being studied
analytical chemistry Ans✓✓✓ study of separation, identification, &
quantification of chemical components in a materials
calibration curve Ans✓✓✓ plot of detector response against analyte
concentration
two variables : known & measured response correlated to known
chemical interference Ans✓✓✓ other components interfere w/ results
like:
- other solutes or matrix effects
- pH
chromatogram Ans✓✓✓ graph that shows detectors response as a
function of elution time
chromatography Ans✓✓✓ method od separating components in a
mixture
